Re: Is it possible to use only Single / Dual SPI Flash?
Posted: Tue Dec 31, 2019 12:29 pmOh, sure. Pull up not pull down. My fault.
Thank you, all the best for the upcoming new year
Thank you, all the best for the upcoming new year
Do you (or anyone else) know whether the /WP and /HOLD-Pins of certain SPI flash ICs are required to be connected to the ESP8266 in "Dual SPI"-Mode?
If so, then there is no real gain in GPIO count (/WP and /HOLD are used as Data2 and Data3 lines in Quad-SPI mode). At the time of my original post I haven't thought about it but as I was reading through SPI flash datasheets I noticed that they have these /WP and /HOLD pins.
I don't know if the ESP8266 makes use of them or if they just can be left not connected.
Anyways, happy new year to everybody
